package com.wc.AlgoOJ_homework.AlgoOJ_test6.C_二进制逆序对;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

/**
 * @Author congge
 * @Date 2024/3/22 19:03
 * @description http://43.138.190.70:8888/p/742?tid=65f90101f9a80dc9ddc3f0c4
 */
public class Main {
    static FastReader sc = new FastReader();
    static PrintWriter out = new PrintWriter(System.out);
    static int N = 200010;
    static int[] a = new int[N];
    static int t, n;

    public static void main(String[] args) {
        t = sc.nextInt();
        while (t-- > 0) {
            n = sc.nextInt();
            int rOne = 0, rZero = 0;
            for (int i = 1; i <= n; i++) {
                a[i] = sc.nextInt();
                if (a[i] == 1) rOne++;
                else rZero++;
            }
            int lOne = 0, lZero = 0;
            int maxI = 0;
            int maxV = 0;
            for (int i = 1; i <= n; i++) {
                if (a[i] == 1) {
                    rOne--;
                    if (maxV < lOne - rZero) {
                        maxI = i;
                        maxV = lOne - rZero;
                    }
                    lOne++;
                } else {
                    rZero--;
                    if (maxV < rZero - lOne) {
                        maxI = i;
                        maxV = rZero - lOne;
                    }
                    lZero++;
                }
            }

//            if (maxI != 0) {
//                if (a[maxI] == 1) {
//                    a[maxI] = 0;
//                    lZero++;
//                    lOne--;
//                } else {
//                    a[maxI] = 1;
//                    lOne++;
//                    lZero--;
//                }
//            }
            long res = 0;
            for (int i = 1; i <= n; i++) {
                if (a[i] == 1) {
                    res += lZero;
                } else {
                    lZero--;
                }
            }
            out.println(res + maxV);
        }
        out.flush();
    }
}

class FastReader {
    StringTokenizer st;
    BufferedReader br;

    FastReader() {
        br = new BufferedReader(new InputStreamReader(System.in));
    }

    String next() {
        while (st == null || !st.hasMoreElements()) {
            try {
                st = new StringTokenizer(br.readLine());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    int nextInt() {
        return Integer.parseInt(next());
    }

    String nextLine() {
        String s = "";
        try {
            s = br.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return s;
    }

    long nextLong() {
        return Long.parseLong(next());
    }

    double nextDouble() {
        return Double.parseDouble(next());
    }

    // 是否由下一个
    boolean hasNext() {
        while (st == null || !st.hasMoreTokens()) {
            try {
                String line = br.readLine();
                if (line == null)
                    return false;
                st = new StringTokenizer(line);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return true;
    }
}
